view docs/man3/SDL_JoystickGetAxis.3 @ 901:fd4a6847ddc0

Date: Thu, 24 Jun 2004 15:13:40 +0300 (EEST) From: Martin_Storsj� Subject: Small patches for SDL/win32 I've tried playing with running SDL compiled for Windows with Wine (and WineX) under Linux. It didn't originally work too well, but I somehow managed to make it work. Most of the fixes was patches to Wine(X), but I also found something in video/windx5/SDL_dx5video.c which, as far as I can tell, actually is a bug in SDL. The result from the COM method Release, which returns the new reference count, is compared to DD_OK. Because QueryInterface is called immediately before, the reference count shouldn't be DD_OK (== 0).
author Sam Lantinga <slouken@libsdl.org>
date Fri, 25 Jun 2004 05:24:50 +0000
parents e5bc29de3f0a
children 546f7c1eb755
line wrap: on
line source

.TH "SDL_JoystickGetAxis" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_JoystickGetAxis\- Get the current state of an axis
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBSint16 \fBSDL_JoystickGetAxis\fP\fR(\fBSDL_Joystick *joystick, int axis\fR);
.SH "DESCRIPTION"
.PP
\fBSDL_JoystickGetAxis\fP returns the current state of the given \fBaxis\fR on the given \fBjoystick\fR\&.
.PP
On most modern joysticks the X axis is usually represented by \fBaxis\fR 0 and the Y axis by \fBaxis\fR 1\&. The value returned by \fBSDL_JoystickGetAxis\fP is a signed integer (-32768 to 32768) representing the current position of the \fBaxis\fR, it maybe necessary to impose certain tolerances on these values to account for jitter\&. It is worth noting that some joysticks use axes 2 and 3 for extra buttons\&.
.SH "RETURN VALUE"
.PP
Returns a 16-bit signed integer representing the current position of the \fBaxis\fR\&.
.SH "EXAMPLES"
.PP
.PP
.nf
\f(CWSint16 x_move, y_move;
SDL_Joystick *joy1;
\&.
\&.
x_move=SDL_JoystickGetAxis(joy1, 0);
y_move=SDL_JoystickGetAxis(joy1, 1);\fR
.fi
.PP
.SH "SEE ALSO"
.PP
\fI\fBSDL_JoystickNumAxes\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00